The Cyclops is angry because he cannot understand how it is possible that a weak man like Odysseus could have blinded and tricked him. Apart from that Odysseus never apologizes, even when Cyclops treats him well. Odysseus bad attitude motivates the Cyclops to seek for revenge and to asks Poseidon to interfere.
What motivated Cyclops is how Odysseus's men tricked him and blinded him. This motivated him to ask his father for help his and put a curse on Odysseus's men.
